Conveyer-belt guide



Nov. 27, 1928. I 1,692,832

w. H. HARRISON CONVEYER BELT GUIDE .Filed Jul 13, 1927 Patented Nov. 27,1928.

UNITED STATES,

PATENT OFFICE.

WILLIAM H. HARRISON, OF PATERSON, NEW JERSEY, ASSIGNQR TO PORTABLE MA-CHINERY COMPANY INC., OF CLIFTON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

Application filed July 13,

My invention relates to improvements in belt conveyers.

In devices of the character specified adapted to transport merchandiseon a traveling belt, it is usual to employ a frame having a drive pulleyat one end and an idler pulley at the opposite end with an endless beltcarried on said pulleys and supported by idlers intermediate the endpulleys.

The merchandise to be transported is placed upon the belt and carriedthereon from end to end of the frame.

Two or more of these frames may be placed end to end if desired and themerchandise to be conveyed thus delivered from one unit to another Theunits may be operated horizontally or in an inclined position.

Efficient operation requires that the belt run true on the pulleys andthat unnecessary friction be avoided.

In the transportation of boxes, cases and large objects having a widthgreater than that of the belt, it is desirable that projections abovethe plane of the belt surface be avoided so that there may be nofrictional contact be tween the articlesbeing conveyed and othersurfaces.

An object of my invention is to provide a new and useful belt conveyer.

A further object of my invention is to provide a belt conveyer in whichthe belt will run true and be prevented from running to the sides of theframe.

A further object of my invention is to pro vide a belt conveyer in whichobstructions may be avoided in the path of the articles being conveyed.

Other objects and advantages of the invention will become apparentduring the course of the following specification and claims.

My invention in its preferred form is embodied in the device illustratedin the accompanying drawings forming a part hereof, in which Figure 1 isa perspective view of the device withparts broken away,

Figure 2 is a cross section of the device, and

Figure 3 is a plan view of the same.

Similar characters refer to similar parts throughout the several views.

The endless conveyer belt 1, is provided with spaced guide lugs 2positioned on its 1927. Scria1 No. 205,297.

under side and extending along its medial line for its entire length.These lugs may be of circular form and secured to the belt by means ofrivets 3.

On the conveyer frame, adjacent the under surface of the belt 1 Iprovide a pair of rails l, 4 forming a channel 3 in which the guide lugs2 travel.

At the ends of the frame are provided pulleys 5 for the belt, one ofwhich may be a drive pulley operated in any desired manner, the otherbeing an idler.

The belt 1 is supported intermediate the end pulleys 5 by idlers 6journalled in supports 9, 10 in the frame arranged in pairs end to end,each pair being spaced to permit the uide lugs 2 to pass between them.As many of these pairs of idlers may be used as conditions may require.The supports 9, 10 for the idlers 6 are carried on cross bars 11anchored to the side rails 7 of the frame.

The rails 1, 4 may be supported by braces 8 carried by the side rails 7.

The end pulleys 5 which carry the belt 1, one only being shown in thedrawings, are provided with peripheral grooves 5 positioned equi-distantfrom their ends and forming a continuation of the channel 3 to permitthe guide lugs 2 to pass over the pulleys.

The device being thus assembled, the guide lugs on the belt 2 running inthe channel 3 between the rails 3, 3 will keep the belt true between theside rails 7 and prevent it from running to either side.

I have also found it desirable in practice to form the end pulleys witha bulge toward the center and of smaller diameter at the ends than inthe center.

Having thus described my invention, what I claim is:

1. In a device of the character described, the combination of a frame,an endless belt thereon, pulleys for said belt, guide lugs on the underside of the belt, and rails extending longitudinally of the belt andspaced to form a channel for said guide lugs.

2. In a device of the character described, the combination of a frame,an endless belt thereon, a channel below the belt and guide lugs on thebelt adapted to travel in said channel.

3. In a device of the character described,

the combination of a belt, a channel below the rnit said lugs to passthe pulleys and spaced idlers intermediate the said pulleys adapted tosupport the belt. 7

Signed at Clifton, in the county of Passaic and State of New, Jersey,this 17 day of May,

lVILLIAM H. HARRISON.

